@article{oai:nagoya.repo.nii.ac.jp:00013099,
 author = {HASEGAWA, Hiroshi and ONO, Toshiyuki and YAMADA, Isao and SAKANIWA, Kohichi},
 issue = {9},
 journal = {IEICE transactions on fundamentals of electronics, communications and computer sciences},
 month = {Sep},
 note = {In this paper, we present a novel iterative MPEG super-resolution method based on an embedded constraint version of Adaptive projected subgradient method [Yamada & Ogura 2003]. We propose an efficient operator that approximates convex projection onto a set characterizing framewise quantization, whereas a conventional method can only handle a convex projection defined for each DCT coefficient of a frame. By using the operator, the proposed method generates a sequence that efficiently approaches to a solution of super-resolution problem defined in terms of quantization error of MPEG compression.},
 pages = {2427--2435},
 title = {An Iterative MPEG Super-Resolution with an Outer Approximation of Framewise Quantization Constraint},
 volume = {E88-A},
 year = {2005}
}